Improvement in leather-crimping machines



4811 1-811 t JFSMITH. ee s ee 1 LEATHER-CRIMPING MACHINE No. 193,191. Patented July 17,1877

INVENTOR;

BY ATTORNEYS.

N. PETERS. PHOTO-LITHOGRAFHEH. WASHINGTUN, D C.

4 Sheets-Sheet Z J'. SMITH.

LEATHER-CRIMPING MACHINE No. 193,191. Patented July 17, 1877.

I E INVENTOR:

- TT0RNEYS.

N. PETERS,- PHOTQUTHOGRAPMER, WASHINGTON. 'D C.

4}. Sheets-#Sheet 3 3'. SMITH.

LEATHER-CRIMPING MACHINE. No. 193,191. Patented July 17, 1877.

Nv PETERS, PHOTO-LITHOGRAPHEN, WAHLNGTON. D C,

4Sheets-Sheet4 J. SMITH. LEATHER-GRIMP'ING MACHINE.

ATTORS.

INVENTOR UNITED JASON SMITH, on OHARLESTOWN, MASSACHUSETTS.

IMPROVEMENT IN LEATHER-CRIMPING MACHINES.

Specification forming part of Letters Patent No. 193,195, dated July 17, 1877; application filed June 4', 1877.

To all whom it may concern.-

Beit known that I, JASON SMITH, of Charlestown, county of Suffolk and State of Massachusetts, have invented a new and Improved Leather-Crimping Machine, of which the fol-' lowing is a specification Figure 1 is a front elevation of my improved leather-crimping machine. Fig. 2 is a .side elevation. Fig. 3 is a front elevation in part section. Fig. 4 is a central vertical section. Fig. 5 is a horizontal section on line as w, in Fig. 4 of the crimping-plates and tree or form. Fig. 6 is a transverse section, taken on line 3 y, in Fig. 5. Fig. 7 represents the top or upper before being crimped; and Fig. 8 rep resents the same after it is crimped.

Similar letters of reference indicate corresponding parts. v

' The object of my invention is to furnish a machine for crimping the uppers of boots and shoes without unduly straining the leather;

and which will leave the upper in the desired form without thickening it at the instep or ankle.

My invention consists in the arrangement, in a suitable frame, of a tree or form rigidly supported by standards attached to a crossbar of the frame, and in plates that slide in grooves in the said standards, one upon either side of the tree, and carry wedge-shaped or beveled pieces, having the same curvature as the tree or form.

It also consists in a clamping device for clamping the leather, and carrying it down over the tree, and in smoothing-plates for pressing the leather smoothly upon the tree, and in levers and screws for operating the various parts, as hereinafter more fully described.

Referring to the drawings, A A are side pieces of the frame that support the various parts of the machine; B, the lower cross-piece, and G G are standards attached to the brackets a formed on the said piece.

A tree or form, D, is supported by the said standards, it being placed in slots formed in the upper ends of the standards and secured by pins. The tree is placed with its concave edge uppermost, and on each side of it plates E are placed, which are guided by grooves formed in the standards 0.

To each of the plate E, a curved beveled piece, F, is pivoted at b, the curvature of which is the same as that of the tree D. The pieces F are provided with projections c, which are engaged by screws 01, that extend through ears 6, attached to the plates E. The pieces E, being placed on opposite sides of the tree D, must of necessity, be right and left. Adjustingscrews f pass through ears 9, that project from the corners of the plates E at their lower edges. These screws rest upon the plate h, which is supported by levers t, that are pivoted in the blocks j formed on or attached to the frame G, which is supported by the head H, which will be presently do scribed. To each of the levers ia screw, 1, is jointed, which is turned down to form a guide that extends through the side of the frame G, and upon which is placed a nut, I, havingformed on it the toothed sector J. Above this nut a lever, K, is pivoted to the side of the frame G, and is provided with a toothed sector, L, that engages the sector J on the nut I.

The lever K is formed into a handle at the front of the machine, and is provided with an adjustable weight, m, at the rear of the machine, and an eyebolt, n, through which -a rod, 0, passes. These levers and their connections in each Side of the frame G, aside from being right and left, are precisely alike.

The frame G is provided with studs p, which slides in slots q formed in the projections 1",-

that extenddownwardly from the end pieces of the head H. Dogs s having the curved ends t are pivoted in the sides of the part 1*, and are capable of engaging the studs 10, when the frame H passes downward, and the frame G is supported by a device, hereinafter described.

The head H consists of two hollow cylindrical parts, K, connected by a yoke, L, and provided with end pieces M that are fitted to ways formed on the side pieces A of the main frame. To the lower side of the parts K corrugated curved beveled pieces N are secured. These pieces N are the counterpart of the pieces ZF-on the plates E, and when to draw it evenly over the tree in the operation of crimping.

A tubular-follower, 0, having head, a, is

fitted to each of the cylindricalparts K, and

to each of the heads a a corrugated plate, 0:,

is attached, which is ifitted to arabbet formed in the upper side of the ribbed piece N A sleeve, P, projects from the end piece M- through a slot in the side of the main frame, and contains a sliding nut, 10, that is moved by a screw, 0 and is provided with ears '1),

between which the three-arm lever 0 is p'iv-' oted. The arm d of the said lever projects into the follower 0,,kand is connected with a stud, e, that projects :from the inner surface of the head ruby a link,f Thisarrangement forms'a toggle, by which the follower O may be forced out and :locked.

The sleeve P is -slotted,-and the arm g of the lever 0 projects upward,'and the arm h downward through the sides of the sleeve. The arm g is connected toan angled lever, 6 pivoted at the top-of the part Khalid-the arm h is rounded, so as to beengaged by arcam,

7' that is'attached to the side piece A-ofthe mainframe. The nut w is provided with a feather, P, that projects into 1311628101? in the sleeve P 130 prevent it :from turning.

The screw a is formed one spindle, m, that extends through the endof thesleeve P, and is provided with acollar, n, having aserrated or iradially-igrooved face, and it is also provided with a thread and nut-at its outer end, for clamping the lever 0' (which is :also provided witha-serrated or grooved face) against the serrated faceof the collar m One *arm of the levero is provided with a weight,;p', and

the other is provided with a roller q, that is engaged by an arm, r, that projects from the side-piece .A. An arm, at, is fitted t0 the sleeve P, .and clamped by a set-screw in any The outer end of this .anm

required position. is bent at right angles, and formsastop for the lever 0 both ends of the head H.

A screw,'Q, is'secured to the yokeL, and, extends hpward-throughan internally-thread.- 1 ed ;sleeve,R, that is journaled in the top piece S of the frame of the machine, and upon which is:placedamiter-wheel, '1, thatisdri-ven by a miter-wheel, U, on the end of the .shaft V, which :is journaled in standards that ,pro-i; Upon the:

ject upward from the top piece S. shaft V two pulleys, t 1t ;,,are placed loosely,

and capable of being engaged ibya frietion- 3 :clutch, ;placed on the shaft V, :and carried 3 'by aespline. The said clutch is moved by 'a' forked .lever, -A', placed on amocking shaft, u,

ceived by a diagonal slot, a, in the bar B end piece M,

which :is-slotted atits upper and .lower e'n'ds, and is guided by the shaft a, and byithe stud b.

This bar is provided with an arm, a, near its upper end, and a series of ratchet-teeth,

W, in its edge near its lower end. ,It is also "provided with a handle, a, by which it may be moved. A spring is'attached to an eye at {the hack of the bar i BHand to the stud b, for the purpose of drawing the bar downward.

A spring-pawl, f is pivoted at g, and is provided with a finger, h, which diverges from 'the'bar B. A'pi'n, 6 projects from the and engages the pawl f when the head H is at the lower portion of the main frame, and engages the arm 0 when the said head is at the upper part of the main frame.

A treadle, O is pivoted in thehangers j, thatare attached to the cross-bar B. To this treadle the rods 0 are jointed; and bent levers D which are ,pivotedin ears ,E at the sides of the main frame, arealso conneeted with it by means of links or short connecting-rods, k. A spring, 1?, is attached to the cross-bar B, and to the treadle 0 for drawing {the latter -.upw ard .as it is released by the foot.

Plates 1 are attached to the side pieces A, for tripping the .dogs 8.

The operation ofmy improved machine'isg'as follows: An uncrimped upper is placed on the beveled pieces F Whenallof the parts anelin the position shown in Figs. 1, 2, and 4:. Motion is imparted to the pulleys t t to drive them inlopposite directions; th-e;foot ispla'ceden the tread'le'G with .suflicien-t force to raise Ithelevers K, so as to vretract the screw 1 andethrow the levers D under the ends .of the frame G the levers i are moved so as to lock the toggle in the follower 0 and the bar B israised until oneof .the notches, d, is engaged by the pawl f. By this meafnsthe clutch W is brought into engagement with the rotating pulley .t which carries the clutch and, consequently, .the shaft V, and rotates the internally-threaded sleeve, so as .to drive the head H downward, the frame G being prevented The various parts described are similar in' fromkdescending by the ,levers D. The Acornugated pieces Nclamp the leather down upon the beveled pieces .F, and the dogs .sengage the studs p-simultaneously. The :treadle C is now-released, when-it is raised by ,thespring F throwing .the pper ended the lovers 1)} outward, so that the frame G may descend with the head H and .at the same time the weighted iends of the levers K-descend and turn the nuts l,.carryin g.the screws 1 forward, so as ltomove ithe levers tandthrow the platefs E and the beveled ,pieces F u pward ,-clamping the leather with more .or les s force between the beveled pieces F and the beveled and .cor-

rugatedgpieces N. .A-t the'same time the rolljournaled in the top .piece, and provided with j anarm, m, which extends zdo wnwar'd and is; provided with a stud, w. This stud is rescend gradually, turning the screws a and forcing the followers 0 toward the tree D, and causing the corrugated plates '0 to press on the leather on the tree with a gradually-increasing force. The head H and frame G descend together, the leather, meanwhile, being drawn smoothly over the tree by the beveled pieces F N, and further pressed and smoothed by the corrugated plates '0. When the opertion of crimping is completed the arms t of the dogs 8 touch the trips 1 and move the dogs so that the frame G drops down, and permits the beveled pieces F to fall away from the corrugated pieces N. Immediately after this is done the arms h of the three-arm levers a strike the cams J and unlock the toggle in the followers 0 and retract the said followers. The pin i now trips the pawl h allowing the bar 13 to drop and throw the clutch W into the wheel. t, which, being rotated in the direction opposite to that of the wheel 29, reverses the motion of theshaft V and sleeve R, and causes the head H to rise until the pin 1? strikes the arm 0 and stops the machine by throwing the clutch W into a central position between the two pulleys. The crimped leather is now removed, and the operation may be repeated.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination, in a crimping-machine,

. of a head, made as described, and two followers carrying corrugated plates, a screw and a nut for moving each follower, and a toggle for locking and releasing them, substantially as shown and described.

2. The combination of the head H, having the end pieces M and sleeves P, the followers 0, link f, three-arm levers 0, nuts w, screws a and weighted lever 0, substantially as shown and described.

3. The adjustable arms 8, in combination with the sleeve P and lever o for limiting the motion of the latter, substantially as specified. 4. The arms 1", in combination with the weighted levers 0, provided with rollers q, substantially as shown and described.

5. The combination of the lever. i with the lever for releasing the follower O, substan tially as shown and described.

6. The movable frame G, having the studs 10, in combination with the head H, carrying the dogs 8, for supporting the leather-clamping mechanism, as shown and described.

7. The levers K, having the eyebolts on and toothed sectors L, the nuts-I, having the in combination with the curved beveled pieces F and the mechanism for operating the plates, substantially as shown. 7

9. The combination, in a leather-crimping machine, of the beveled curved pieces F and the beveled corrugated and curved pieces N for drawing the leather over the tree, substantially as herein shown and described.

10. The cams J, affixed to the side pieces A, for tripping the lever h, substantially as and for the purpose herein shown and described.

11: The combination of the bar B, having the slot 0., arnrc and ratchet-teeth d, the pawl f, the pin i and shifting lever 42, substantially as shown and described.

JASON SMITH.

Witnesses:

G. SEDGWIGK, ALEX. F. ROBERTS- 

